A Westchester dogwalker was arrested at Rye Playland for impersonating an FBI agent — months after he was busted for falsely reporting that he was shot, according to cops.

John Fiore, 47, was sporting an FBI badge on his waist and telling passersby he was a federal agent who’d been injured in the line of duty while hanging around the amusement park on July 4, police told Mid Hudson News.

When two undercover Westchester County cops approached Fiore, he flashed a fed badge and told the duo that he had been shot in the line of duty, pulling off a knee brace to show them his wound, police said. 

Fiore reportedly also told cops that his accompanying dog was a K-9 cop that had been shot along with Fiore in the line of duty — and killed their attacker. 

But police said the keen undercover Westchester County cops soon realized something was fishy about Fiore.

After the sham G-man left, police said an employee handed the cops Fiore’s business card — for a dogwalking service. 

Investigators then tried to establish Fiore’s bona fides, but couldn’t find an FBI agent whose dog had killed a perp, who was involved in a shooting, or who even had his name. 

But what investigators did find was that Fiore had been arrested back in May — for allegedly lying to cops and saying that he’d been shot by an unknown man in the knee, only for investigators to find out it was a fabricated report, according to a department press release. 

Investigators searching Fiore’s home after that deception found numerous illegal firearms, stolen psychedelic mushrooms and baggies containing white powder, police said.

Police said the two undercovers then cuffed Fiore, who reportedly tried to kick his counterfeit badge out of sight — but to no avail. 

Cops charged Fiore with felony criminal impersonation, and he’s due back in Rye City Court Wednesday. 

His attorney did not immediately respond to a request for comment.